|
2329
|
1 SUBROUTINE ZLACPY( UPLO, M, N, A, LDA, B, LDB ) |
|
|
2 * |
|
7034
|
3 * -- LAPACK auxiliary routine (version 3.1) -- |
|
|
4 * Univ. of Tennessee, Univ. of California Berkeley and NAG Ltd.. |
|
|
5 * November 2006 |
|
2329
|
6 * |
|
|
7 * .. Scalar Arguments .. |
|
|
8 CHARACTER UPLO |
|
|
9 INTEGER LDA, LDB, M, N |
|
|
10 * .. |
|
|
11 * .. Array Arguments .. |
|
|
12 COMPLEX*16 A( LDA, * ), B( LDB, * ) |
|
|
13 * .. |
|
|
14 * |
|
|
15 * Purpose |
|
|
16 * ======= |
|
|
17 * |
|
|
18 * ZLACPY copies all or part of a two-dimensional matrix A to another |
|
|
19 * matrix B. |
|
|
20 * |
|
|
21 * Arguments |
|
|
22 * ========= |
|
|
23 * |
|
|
24 * UPLO (input) CHARACTER*1 |
|
|
25 * Specifies the part of the matrix A to be copied to B. |
|
|
26 * = 'U': Upper triangular part |
|
|
27 * = 'L': Lower triangular part |
|
|
28 * Otherwise: All of the matrix A |
|
|
29 * |
|
|
30 * M (input) INTEGER |
|
|
31 * The number of rows of the matrix A. M >= 0. |
|
|
32 * |
|
|
33 * N (input) INTEGER |
|
|
34 * The number of columns of the matrix A. N >= 0. |
|
|
35 * |
|
|
36 * A (input) COMPLEX*16 array, dimension (LDA,N) |
|
|
37 * The m by n matrix A. If UPLO = 'U', only the upper trapezium |
|
|
38 * is accessed; if UPLO = 'L', only the lower trapezium is |
|
|
39 * accessed. |
|
|
40 * |
|
|
41 * LDA (input) INTEGER |
|
|
42 * The leading dimension of the array A. LDA >= max(1,M). |
|
|
43 * |
|
|
44 * B (output) COMPLEX*16 array, dimension (LDB,N) |
|
|
45 * On exit, B = A in the locations specified by UPLO. |
|
|
46 * |
|
|
47 * LDB (input) INTEGER |
|
|
48 * The leading dimension of the array B. LDB >= max(1,M). |
|
|
49 * |
|
|
50 * ===================================================================== |
|
|
51 * |
|
|
52 * .. Local Scalars .. |
|
|
53 INTEGER I, J |
|
|
54 * .. |
|
|
55 * .. External Functions .. |
|
|
56 LOGICAL LSAME |
|
|
57 EXTERNAL LSAME |
|
|
58 * .. |
|
|
59 * .. Intrinsic Functions .. |
|
|
60 INTRINSIC MIN |
|
|
61 * .. |
|
|
62 * .. Executable Statements .. |
|
|
63 * |
|
|
64 IF( LSAME( UPLO, 'U' ) ) THEN |
|
|
65 DO 20 J = 1, N |
|
|
66 DO 10 I = 1, MIN( J, M ) |
|
|
67 B( I, J ) = A( I, J ) |
|
|
68 10 CONTINUE |
|
|
69 20 CONTINUE |
|
|
70 * |
|
|
71 ELSE IF( LSAME( UPLO, 'L' ) ) THEN |
|
|
72 DO 40 J = 1, N |
|
|
73 DO 30 I = J, M |
|
|
74 B( I, J ) = A( I, J ) |
|
|
75 30 CONTINUE |
|
|
76 40 CONTINUE |
|
|
77 * |
|
|
78 ELSE |
|
|
79 DO 60 J = 1, N |
|
|
80 DO 50 I = 1, M |
|
|
81 B( I, J ) = A( I, J ) |
|
|
82 50 CONTINUE |
|
|
83 60 CONTINUE |
|
|
84 END IF |
|
|
85 * |
|
|
86 RETURN |
|
|
87 * |
|
|
88 * End of ZLACPY |
|
|
89 * |
|
|
90 END |
